Audi RS4 B8 RS5 8T Gearbox Oil Filter Housing Cover S-Tronic 4.2 FSI 0B5325240B

Audi RS4 B8 RS5 8T S‑Tronic Gearbox Oil Filter Housing 4.2 FSI is an original part from the Oil Coolers and Hoses category, designed for the S‑Tronic gearbox lubrication system in sporty Audi models. It ensures stable gearbox oil flow and proper filter seating, which is crucial for gearbox durability during dynamic driving.

Specifications and technical data

• SKU: 0B5325240B
• Mark: Audi
• Condition: Used
• OEM Part Number: 0B5325240B
• Substitutable numbers: 0B5325240B, 0B5 325 240 B
• Category: Oil Coolers & Lines

Purpose and Function in the S‑Tronic System

The S‑Tronic gearbox oil filter housing is responsible for securely enclosing the filter element and properly directing the oil flow within the dual-clutch transmission. This is particularly important in sporty 4.2 FSI units because it:

• stabilizes oil pressure in critical gearbox lubrication channels,
• ensures proper filtration of metallic particles and deposits from the gearbox,
• reduces the risk of oil overheating during intense driving, by working in conjunction with the oil cooling system.

A correctly selected filter housing is key to maintaining smooth gearbox operation, precise gear changes, and protecting the internal components of the S‑Tronic gearbox.

Benefits of Using an Original Audi Housing

Choosing an original housing from the Oil Coolers and Hoses group for the Audi RS4 B8 / RS5 8T allows you to maintain the factory performance parameters of the drivetrain. The main advantages include:

• Factory Fitment to the S‑Tronic gearbox geometry and oil line system, with no modifications required.
• Compatibility with the original oil filter used in the gearbox, simplifying servicing and periodic replacement.
• Proper integration with the oil cooler and hoses, contributing to stable gearbox operating temperatures.
• Reduced risk of leaks around the filter area, by maintaining the original seal design.

For powerful 4.2 FSI engines, where the gearbox operates under high load, maintaining the factory configuration of lubrication and cooling components directly impacts the lifespan of the entire drivetrain.

Characteristics of a Used Part

The offered housing is a used part, removed from a vehicle, offering a favorable balance between cost and maintaining original Audi specifications. This type of part is particularly attractive when:

• you are repairing localized damage to the housing after a collision or improper service,
• you are restoring the factory configuration after previous modifications,
• you are looking for savings while still obtaining an OEM component.

Before installation, standard servicing procedures are recommended: inspection of sealing surfaces, threads, and mating parts of the filter and oil lines.

Integration with the Oil Cooling System and Hoses

As part of the Oil Coolers and Hoses category, the filter housing works with the oil supply and return lines, as well as the gearbox oil cooler. A correctly selected component:

• ensures the proper direction of oil flow through the filter and cooler,
• maintains the seal integrity with the oil lines,
• stabilizes gearbox operating parameters under high thermal loads.

This is especially important in dynamically driven vehicles, where the gearbox oil cooling system directly influences the driving experience and drivetrain safety.

Related Products and Technical Knowledge

If you are looking for other items in the Audi Oil Coolers and Hoses category, check out our dedicated offer: Audi oil coolers and hoses. This will help you easily assemble a complete set of components necessary for servicing the gearbox lubrication and cooling system.

When planning maintenance work related to drivetrain oil temperature, it is worth familiarizing yourself with practical tips on cooling systems – you can find them in the guide Summer Heat vs. Cooling System: Used Coolers and Fans Guarantee Savings, which discusses the impact of high temperatures on components operating in oil and coolant circuits.

If you are considering the choice between a used part and an aftermarket alternative, the article 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement, describing the practical differences in fit and durability of OEM components, may also be helpful.